What present-day ship would be most useful if sent back to the Second World War?
Short answerA Ford-class carrier with its air wing would be overwhelming; a Queen Elizabeth-class carrier is the leading British option.
NotesA Gerald R. Ford-class carrier is described as close to a conventional-war win button because of its air wing. Its aircraft and sensors would overwhelm 1940s opposition long before the ship itself approached danger. The Queen Elizabeth class is a more practical British answer because its gas turbines could potentially be supported with adapted wartime fuel production. Taking the machinery and aircraft back would also accelerate turbine and jet-engine development far beyond the immediate combat effect.